Found some historical information about MH in RFC 808. Supplemented it with
[mmh] / etc / scan.MMDDYY
2000-08-10 Dan HarklessChanged my mind again on scan.MMDDYY and scan.YYYYMMDD...
2000-08-10 Dan HarklessDecided that limiting the message number columns to...
2000-03-14 Dan HarklessApplied Simon Burge <simonb@thistledown.com.au>'s dtime...